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Prints without any brackets except when using the alphabetic or numeric style when it uses square brackets There are also a number of different citation commands available for you to use. If you only open one set of square brackets it will assume the contents of the brackets is a postnote, so if you only want a prenote make sure you still open the second set of square brackets and then just leave it empty. This is what the citation would look like in the text: In this example we've already loaded the alphabetic style and latexcompanion is just the citation key. To add these notes in you uses two sets of square brackets in the citation command.
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Here's a list of some of the different sorting options available: This would use the author-year style and then sort the bibliography entries by year, name, title.
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